unittests/Support/Path.cpp

   1 //===- llvm/unittest/Support/Path.cpp - Path tests ------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/Support/PathV2.h"
  11 #include "llvm/Support/ErrorHandling.h"
  12 #include "llvm/Support/FileSystem.h"
  13 #include "llvm/Support/raw_ostream.h"
  14 #include "gtest/gtest.h"
  15
  16 using namespace llvm;
  17 using namespace llvm::sys;
  18
  19 #define ASSERT_NO_ERROR(x) \
  20   if (error_code ASSERT_NO_ERROR_ec = x) { \
  21     SmallString<128> MessageStorage; \
  22     raw_svector_ostream Message(MessageStorage); \
  23     Message << #x ": did not return errc::success.\n" \
  24             << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \
  25             << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \
  26     GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \
  27   } else {}
  28
  29 namespace {
  30
  31 TEST(is_separator, Works) {
  32   EXPECT_TRUE(path::is_separator('/'));
  33   EXPECT_FALSE(path::is_separator('\0'));
  34   EXPECT_FALSE(path::is_separator('-'));
  35   EXPECT_FALSE(path::is_separator(' '));
  36
  37 #ifdef LLVM_ON_WIN32
  38   EXPECT_TRUE(path::is_separator('\\'));
  39 #else
  40   EXPECT_FALSE(path::is_separator('\\'));
  41 #endif
  42 }
  43
  44 TEST(Support, Path) {
  45   SmallVector<StringRef, 40> paths;
  46   paths.push_back("");
  47   paths.push_back(".");
  48   paths.push_back("..");
  49   paths.push_back("foo");
  50   paths.push_back("/");
  51   paths.push_back("/foo");
  52   paths.push_back("foo/");
  53   paths.push_back("/foo/");
  54   paths.push_back("foo/bar");
  55   paths.push_back("/foo/bar");
  56   paths.push_back("//net");
  57   paths.push_back("//net/foo");
  58   paths.push_back("///foo///");
  59   paths.push_back("///foo///bar");
  60   paths.push_back("/.");
  61   paths.push_back("./");
  62   paths.push_back("/..");
  63   paths.push_back("../");
  64   paths.push_back("foo/.");
  65   paths.push_back("foo/..");
  66   paths.push_back("foo/./");
  67   paths.push_back("foo/./bar");
  68   paths.push_back("foo/..");
  69   paths.push_back("foo/../");
  70   paths.push_back("foo/../bar");
  71   paths.push_back("c:");
  72   paths.push_back("c:/");
  73   paths.push_back("c:foo");
  74   paths.push_back("c:/foo");
  75   paths.push_back("c:foo/");
  76   paths.push_back("c:/foo/");
  77   paths.push_back("c:/foo/bar");
  78   paths.push_back("prn:");
  79   paths.push_back("c:\\");
  80   paths.push_back("c:foo");
  81   paths.push_back("c:\\foo");
  82   paths.push_back("c:foo\\");
  83   paths.push_back("c:\\foo\\");
  84   paths.push_back("c:\\foo/");
  85   paths.push_back("c:/foo\\bar");
  86
  87   for (SmallVector<StringRef, 40>::const_iterator i = paths.begin(),
  88                                                   e = paths.end();
  89                                                   i != e;
  90                                                   ++i) {
  91     for (sys::path::const_iterator ci = sys::path::begin(*i),
  92                                    ce = sys::path::end(*i);
  93                                    ci != ce;
  94                                    ++ci) {
  95       ASSERT_FALSE(ci->empty());
  96     }
  97
  98 #if 0 // Valgrind is whining about this.
  99     outs() << "    Reverse Iteration: [";
 100     for (sys::path::reverse_iterator ci = sys::path::rbegin(*i),
 101                                      ce = sys::path::rend(*i);
 102                                      ci != ce;
 103                                      ++ci) {
 104       outs() << *ci << ',';
 105     }
 106     outs() << "]\n";
 107 #endif
 108
 109     path::has_root_path(*i);
 110     path::root_path(*i);
 111     path::has_root_name(*i);
 112     path::root_name(*i);
 113     path::has_root_directory(*i);
 114     path::root_directory(*i);
 115     path::has_parent_path(*i);
 116     path::parent_path(*i);
 117     path::has_filename(*i);
 118     path::filename(*i);
 119     path::has_stem(*i);
 120     path::stem(*i);
 121     path::has_extension(*i);
 122     path::extension(*i);
 123     path::is_absolute(*i);
 124     path::is_relative(*i);
 125
 126     SmallString<128> temp_store;
 127     temp_store = *i;
 128     ASSERT_NO_ERROR(fs::make_absolute(temp_store));
 129     temp_store = *i;
 130     path::remove_filename(temp_store);
 131
 132     temp_store = *i;
 133     path::replace_extension(temp_store, "ext");
 134     StringRef filename(temp_store.begin(), temp_store.size()), stem, ext;
 135     stem = path::stem(filename);
 136     ext  = path::extension(filename);
 137     EXPECT_EQ(*(--sys::path::end(filename)), (stem + ext).str());
 138
 139     path::native(*i, temp_store);
 140   }
 141 }
 142
 143 class FileSystemTest : public testing::Test {
 144 protected:
 145   /// Unique temporary directory in which all created filesystem entities must
 146   /// be placed. It is recursively removed at the end of each test.
 147   SmallString<128> TestDirectory;
 148
 149   virtual void SetUp() {
 150     int fd;
 151     ASSERT_NO_ERROR(
 152       fs::unique_file("file-system-test-%%-%%-%%-%%/test-directory.anchor", fd,
 153                       TestDirectory));
 154     // We don't care about this specific file.
 155     ::close(fd);
 156     TestDirectory = path::parent_path(TestDirectory);
 157     errs() << "Test Directory: " << TestDirectory << '\n';
 158     errs().flush();
 159   }
 160
 161   virtual void TearDown() {
 162     uint32_t removed;
 163     ASSERT_NO_ERROR(fs::remove_all(TestDirectory.str(), removed));
 164   }
 165 };
 166
 167 TEST_F(FileSystemTest, TempFiles) {
 168   // Create a temp file.
 169   int FileDescriptor;
 170   SmallString<64> TempPath;
 171   ASSERT_NO_ERROR(
 172     fs::unique_file("%%-%%-%%-%%.temp", FileDescriptor, TempPath));
 173
 174   // Make sure it exists.
 175   bool TempFileExists;
 176   ASSERT_NO_ERROR(sys::fs::exists(Twine(TempPath), TempFileExists));
 177   EXPECT_TRUE(TempFileExists);
 178
 179   // Create another temp tile.
 180   int FD2;
 181   SmallString<64> TempPath2;
 182   ASSERT_NO_ERROR(fs::unique_file("%%-%%-%%-%%.temp", FD2, TempPath2));
 183   ASSERT_NE(TempPath.str(), TempPath2.str());
 184
 185   fs::file_status A, B;
 186   ASSERT_NO_ERROR(fs::status(Twine(TempPath), A));
 187   ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B));
 188   EXPECT_FALSE(fs::equivalent(A, B));
 189
 190   // Try to copy the first to the second.
 191   EXPECT_EQ(
 192     fs::copy_file(Twine(TempPath), Twine(TempPath2)), errc::file_exists);
 193
 194   ::close(FD2);
 195   // Try again with the proper options.
 196   ASSERT_NO_ERROR(fs::copy_file(Twine(TempPath), Twine(TempPath2),
 197                                 fs::copy_option::overwrite_if_exists));
 198   // Remove Temp2.
 199   ASSERT_NO_ERROR(fs::remove(Twine(TempPath2), TempFileExists));
 200   EXPECT_TRUE(TempFileExists);
 201
 202   // Make sure Temp2 doesn't exist.
 203   ASSERT_NO_ERROR(fs::exists(Twine(TempPath2), TempFileExists));
 204   EXPECT_FALSE(TempFileExists);
 205
 206   // Create a hard link to Temp1.
 207   ASSERT_NO_ERROR(fs::create_hard_link(Twine(TempPath), Twine(TempPath2)));
 208   bool equal;
 209   ASSERT_NO_ERROR(fs::equivalent(Twine(TempPath), Twine(TempPath2), equal));
 210   EXPECT_TRUE(equal);
 211   ASSERT_NO_ERROR(fs::status(Twine(TempPath), A));
 212   ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B));
 213   EXPECT_TRUE(fs::equivalent(A, B));
 214
 215   // Remove Temp1.
 216   ::close(FileDescriptor);
 217   ASSERT_NO_ERROR(fs::remove(Twine(TempPath), TempFileExists));
 218   EXPECT_TRUE(TempFileExists);
 219
 220   // Remove the hard link.
 221   ASSERT_NO_ERROR(fs::remove(Twine(TempPath2), TempFileExists));
 222   EXPECT_TRUE(TempFileExists);
 223
 224   // Make sure Temp1 doesn't exist.
 225   ASSERT_NO_ERROR(fs::exists(Twine(TempPath), TempFileExists));
 226   EXPECT_FALSE(TempFileExists);
 227 }
 228
 229 TEST_F(FileSystemTest, DirectoryIteration) {
 230   error_code ec;
 231   for (fs::directory_iterator i(".", ec), e; i != e; i.increment(ec))
 232     ASSERT_NO_ERROR(ec);
 233
 234   // Create a known hierarchy to recurse over.
 235   bool existed;
 236   ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory)
 237                   + "/recursive/a0/aa1", existed));
 238   ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory)
 239                   + "/recursive/a0/ab1", existed));
 240   ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory)
 241                   + "/recursive/dontlookhere/da1", existed));
 242   ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory)
 243                   + "/recursive/z0/za1", existed));
 244   ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory)
 245                   + "/recursive/pop/p1", existed));
 246   typedef std::vector<std::string> v_t;
 247   v_t visited;
 248   for (fs::recursive_directory_iterator i(Twine(TestDirectory)
 249          + "/recursive", ec), e; i != e; i.increment(ec)){
 250     ASSERT_NO_ERROR(ec);
 251     if (path::filename(i->path()) == "p1") {
 252       i.pop();
 253       // FIXME: recursive_directory_iterator should be more robust.
 254       if (i == e) break;
 255     }
 256     if (path::filename(i->path()) == "dontlookhere")
 257       i.no_push();
 258     visited.push_back(path::filename(i->path()));
 259   }
 260   v_t::const_iterator a0 = std::find(visited.begin(), visited.end(), "a0");
 261   v_t::const_iterator aa1 = std::find(visited.begin(), visited.end(), "aa1");
 262   v_t::const_iterator ab1 = std::find(visited.begin(), visited.end(), "ab1");
 263   v_t::const_iterator dontlookhere = std::find(visited.begin(), visited.end(),
 264                                                "dontlookhere");
 265   v_t::const_iterator da1 = std::find(visited.begin(), visited.end(), "da1");
 266   v_t::const_iterator z0 = std::find(visited.begin(), visited.end(), "z0");
 267   v_t::const_iterator za1 = std::find(visited.begin(), visited.end(), "za1");
 268   v_t::const_iterator pop = std::find(visited.begin(), visited.end(), "pop");
 269   v_t::const_iterator p1 = std::find(visited.begin(), visited.end(), "p1");
 270
 271   // Make sure that each path was visited correctly.
 272   ASSERT_NE(a0, visited.end());
 273   ASSERT_NE(aa1, visited.end());
 274   ASSERT_NE(ab1, visited.end());
 275   ASSERT_NE(dontlookhere, visited.end());
 276   ASSERT_EQ(da1, visited.end()); // Not visited.
 277   ASSERT_NE(z0, visited.end());
 278   ASSERT_NE(za1, visited.end());
 279   ASSERT_NE(pop, visited.end());
 280   ASSERT_EQ(p1, visited.end()); // Not visited.
 281
 282   // Make sure that parents were visited before children. No other ordering
 283   // guarantees can be made across siblings.
 284   ASSERT_LT(a0, aa1);
 285   ASSERT_LT(a0, ab1);
 286   ASSERT_LT(z0, za1);
 287 }
 288
 289 TEST_F(FileSystemTest, Magic) {
 290   struct type {
 291     const char *filename;
 292     const char *magic_str;
 293     size_t      magic_str_len;
 294   } types [] = {{"magic.archive", "!<arch>\x0A", 8}};
 295
 296   // Create some files filled with magic.
 297   for (type *i = types, *e = types + (sizeof(types) / sizeof(type)); i != e;
 298                                                                      ++i) {
 299     SmallString<128> file_pathname(TestDirectory);
 300     path::append(file_pathname, i->filename);
 301     std::string ErrMsg;
 302     raw_fd_ostream file(file_pathname.c_str(), ErrMsg,
 303                         raw_fd_ostream::F_Binary);
 304     ASSERT_FALSE(file.has_error());
 305     StringRef magic(i->magic_str, i->magic_str_len);
 306     file << magic;
 307     file.close();
 308     bool res = false;
 309     ASSERT_NO_ERROR(fs::has_magic(file_pathname.c_str(), magic, res));
 310     EXPECT_TRUE(res);
 311   }
 312 }
 313
 314 #if !defined(_WIN32) // FIXME: Win32 has different permission schema.
 315 TEST_F(FileSystemTest, Permissions) {
 316   // Create a temp file.
 317   int FileDescriptor;
 318   SmallString<64> TempPath;
 319   ASSERT_NO_ERROR(
 320     fs::unique_file("%%-%%-%%-%%.temp", FileDescriptor, TempPath));
 321
 322   // Mark file as read-only
 323   const fs::perms AllWrite = fs::owner_write|fs::group_write|fs::others_write;
 324   ASSERT_NO_ERROR(fs::permissions(Twine(TempPath), fs::remove_perms|AllWrite));
 325
 326   // Verify file is read-only
 327   fs::file_status Status;
 328   ASSERT_NO_ERROR(fs::status(Twine(TempPath), Status));
 329   bool AnyWriteBits = (Status.permissions() & AllWrite);
 330   EXPECT_FALSE(AnyWriteBits);
 331
 332   // Mark file as read-write
 333   ASSERT_NO_ERROR(fs::permissions(Twine(TempPath), fs::add_perms|AllWrite));
 334
 335   // Verify file is read-write
 336   ASSERT_NO_ERROR(fs::status(Twine(TempPath), Status));
 337   AnyWriteBits = (Status.permissions() & AllWrite);
 338   EXPECT_TRUE(AnyWriteBits);
 339 }
 340 #endif
 341
 342 TEST_F(FileSystemTest, FileMapping) {
 343   // Create a temp file.
 344   int FileDescriptor;
 345   SmallString<64> TempPath;
 346   ASSERT_NO_ERROR(
 347     fs::unique_file("%%-%%-%%-%%.temp", FileDescriptor, TempPath));
 348   // Map in temp file and add some content
 349   error_code EC;
 350   StringRef Val("hello there");
 351   {
 352     fs::mapped_file_region mfr(FileDescriptor,
 353                                fs::mapped_file_region::readwrite,
 354                                4096,
 355                                0,
 356                                EC);
 357     ASSERT_NO_ERROR(EC);
 358     std::copy(Val.begin(), Val.end(), mfr.data());
 359     // Explicitly add a 0.
 360     mfr.data()[Val.size()] = 0;
 361     // Unmap temp file
 362   }
 363
 364   // Map it back in read-only
 365   fs::mapped_file_region mfr(Twine(TempPath),
 366                              fs::mapped_file_region::readonly,
 367                              0,
 368                              0,
 369                              EC);
 370   ASSERT_NO_ERROR(EC);
 371
 372   // Verify content
 373   EXPECT_EQ(StringRef(mfr.const_data()), Val);
 374
 375   // Unmap temp file
 376
 377 #if LLVM_HAS_RVALUE_REFERENCES
 378   fs::mapped_file_region m(Twine(TempPath),
 379                              fs::mapped_file_region::readonly,
 380                              0,
 381                              0,
 382                              EC);
 383   ASSERT_NO_ERROR(EC);
 384   const char *Data = m.const_data();
 385   fs::mapped_file_region mfrrv(llvm_move(m));
 386   EXPECT_EQ(mfrrv.const_data(), Data);
 387 #endif
 388 }
 389 } // anonymous namespace